package filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;

import database.DP;

@WebFilter(filterName = "f2",urlPatterns = "/s")
public class loginFilter implements Filter{
	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		System.out.println("过滤器222");
		HttpServletRequest req = (HttpServletRequest) request;
		if(req.getSession().getAttribute("mname")!=null)
		chain.doFilter(request, response);
		else 
		request.getRequestDispatcher("page/login.jsp").forward(request, response);
		
	}

}
